Word by Word Analysis

وَإِذَآ أَرَدْنَآ أَن نُّهْلِكَ قَرْيَةً أَمَرْنَا مُتْرَفِيهَا فَفَسَقُوا۟ فِيهَا فَحَقَّ عَلَيْهَا ٱلْقَوْلُ فَدَمَّرْنَـٰهَا تَدْمِيرًا 16

And when We intend to destroy a city, We command its affluent but they defiantly disobey therein; so the word [i.e., deserved decree] comes into effect upon it, and We destroy it with [complete] destruction.